Binder



FIG. 1 is a perspective view of a new and ornamental design for a binder.

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a rear elevation view thereof.

The broken line showing of the inner binding rings and base structure shown in FIGS. 1, 3, and 4 form no part of the claimed design. 

The ornamental design for a binder, as shown and described. 